Joint Venture (Other Income Related JV) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Schedule of Equity Method Investments [Line Items]
Other income	$ 4,681	$ 3,006	$ 7,893	$ 4,471
Woodward and General Electric Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Other income	$ 4,681	$ 3,006	$ 7,893	$ 4,471